Investigation of crystal and magnetic structure of complex iron oxides with perovskite structural type by neutron diffraction

1.

Investigation of crystal and magnetic structure
of complex iron oxides with perovskite
structural type by neutron diffraction
B.K. Argymbek1, S.E. Kichanov1, D.P. Kozlenko1, V. Chlan2,
E.V. Lukin1, B.N. Savenko1Russia
1Joint
Institute for nuclear research, 141980, Dubna, Russia
2Faculty of Mathematics and Physics, Charles University in Prague, 18000 Prague 8, Czech
Republic
Budapest, 2019

2.

HIGH-FLUX PULSED REACTOR IBR-2
The DN-6 Neutron Diffractometer for High-Pressure
Research

3.

Ordered and disordered magnetic oxides with
double perovskite structure
A2BB′O6
ABO3
B
B′
Pb2FeSbO6

4.

Results of neutron diffraction for Pb2FeSbO6
2600
AFM
2400
300K
2200
30K
Intensity (arb. units)
2000
AFM
1800
300K
25K
1600
30K
20K
1400
25K
1200
20K
1000
15K
11K
800
11K
9K
600
9K
400
7K
200
15K
ത
Fm3m
7K
5K
5K
0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
3.2
3.4
3.6
I4/m
T~175 к
d-spacing(Å)